Question

500.0 mL of hydrochloric acid 2.50M are mixed with 250.0mL of hydrochloric acid 3.75M. Assume that volumes are additive. What is the final concentration (in Molarity) of the hydrochloric acid?

Answer 1

Soin > Miri = 1.25 mal 1. Ist Husum and he soin Vi= sooml= o.si [1 ml=1631] Va = 200 ml= o.are M, = 8.5M = 2.5 moldt Ma = 3.75M = 3.75 med et MV=2.5 malt toore Mava=0.25 lx 3-75 mallt Mava=0.9375 mol Holes & HU = 1.25 may } Moles of HU = 0.9375 mol Both Hel. salutions are mixed. Total volume of solution = V + V₂ = 0.5lto.art 1 = 0.751 Total meoles of HU=1025 +0.9375= 2.1875 mal As Concentration = no q mole entration - Taume final concentration of sol" = Total nudes of Hi Total volume of s chution - 2+18 75 mol 0.75 l = 2.916 M — final concente ation of solution = 2.92M cs Scanned with CamScanner